Home / 21,254.04-31,881.12-10,158.21

Finding the Fourth Proportional to 21,254.04, 31,881.12 and 10,158.21

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Solution

The fourth proportional to 21,254.04, 31,881.12 and 10,158.21 is: 15,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.04 : 31,881.12 = 10,158.21 : x
  2. Step 2: Convert to fraction form
    21,254.04/31,881.12 = 10,158.21/x
  3. Step 3: Cross multiply
    21,254.04x = 31,881.12 × 10,158.21
  4. Step 4: Simplify right side
    21,254.04x = 323,855,112.00
  5. Step 5: Solve for x
    x = 323,855,112.00/21,254.04
  6. Step 6: Final answer
    x = 15,237.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.